Internet Explorer and Session Beans

Does anybody know of any peculiarities when using Internet Explorer to access a page that uses a session bean? My test was very simple: a page with a form that submits to a page that instantiates the session bean and populates it with the form data. I then retrieve the contents of the bean for display. I found that if I submit the form a second time(which, BTW, was just 3 text fields) with none of the fields populated I found that the existing session bean retained all of its data elements rather than being blanked out (which is what I expect would happen). If I enter data in one of the fields and submit the bean data changes for just that field changes while the other 2 elements remain at their original values. When I try doing this in either Netscape 4.xx or Netscape 6.xx the form / bean interaction behaves as I expect it would -- submitting a blank form results in the blanking out of the session bean data. I would appreciated it if anybody can shed some light on this for me